1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your AOOSTAR R7 5825U Mini PC. Please read this guide thoroughly before using the device to ensure optimal performance and longevity. The AOOSTAR R7 5825U is a compact and powerful mini PC designed for various applications, from everyday computing to advanced virtualization and network functions.
2. Product Overview
Familiarize yourself with the physical components and ports of your AOOSTAR R7 5825U Mini PC.

Figure 2.1: Front view of the AOOSTAR R7 5825U Mini PC, showcasing its compact design and power button.

Figure 2.2: Rear view of the AOOSTAR R7 5825U Mini PC, highlighting the various connectivity ports including USB, HDMI, DisplayPort, Type-C, and dual 2.5G RJ45 Ethernet ports.
Key Features:
- Processor: AMD Ryzen 7 5825U (8 Cores/16 Threads, up to 4.5GHz)
- Memory Support: Dual-channel DDR4 3200MHz RAM (up to 64GB)
- Storage: Supports 2x M.2 2280 NVMe SSDs (up to 2x 4TB PCIe 3.0) and 2x 2.5"/3.5" SATA drives (up to 44TB total)
- Connectivity: 1x HDMI, 1x DisplayPort, 1x Full-featured Type-C (65W charge, 10GB/s data), 2x 2.5G RJ45 Ethernet, 2x USB 3.0, 2x USB 2.0, 1x 2-in-1 Audio&Mic Jack, 1x TF card reader
- Display Output: Supports 4K@60Hz triple screen display via HDMI, DP, and Type-C
- Wireless: Dual-band Wi-Fi 6.0, Bluetooth 5.2
- Cooling: Built-in dual low-noise fans for efficient heat dissipation
- Operating System Compatibility: Supports Windows 10/11, OPNsense, OpenWrt, Ubuntu, ESXI, PVE, and other open-source solutions.

Figure 2.3: Visual summary of the AOOSTAR R7 5825U Mini PC's core features, including CPU, display outputs, network, RAM, storage, and cooling system.

Figure 2.4: Illustration of the AOOSTAR R7 5825U Mini PC's extensive storage capabilities, supporting up to 44TB with two 3.5-inch HDDs and two M.2 2280 SSDs.
3. Setup Guide
This section guides you through the initial setup of your AOOSTAR R7 5825U Mini PC.
3.1 Unpacking
Carefully remove all components from the packaging. Ensure the following items are present:
- AOOSTAR R7 5825U Mini PC
- HDMI Cable
- 90-100W Power Adapter
3.2 Installing RAM and SSD (If not pre-installed)
The AOOSTAR R7 5825U Mini PC is offered without RAM, SSD, or OS. Follow these steps to install your components:
- Power Off: Ensure the Mini PC is powered off and disconnected from the power adapter.
- Open Chassis: Refer to the product diagram or manufacturer's specific instructions to open the Mini PC chassis. This typically involves removing screws from the bottom or rear panel.
- Install RAM: Locate the DDR4 SODIMM slots. Align the notch on the RAM module with the slot and press down firmly on both ends until the clips snap into place.
- Install M.2 NVMe SSD: Locate the M.2 slots. Insert the M.2 SSD at an angle into the slot, then gently push it down and secure it with the provided screw.
- Install 2.5"/3.5" SATA Drives (Optional): If installing additional SATA drives, mount them in the designated bays and connect the SATA data and power cables.
- Close Chassis: Carefully close the chassis and secure it with the screws.

Figure 3.1: Internal view of the AOOSTAR R7 5825U Mini PC, showing the accessible slots for RAM and M.2 NVMe SSDs, as well as bays for 2.5-inch or 3.5-inch SATA drives.
3.3 Connecting Peripherals
Connect your monitor, keyboard, mouse, and other peripherals:
- Display: Connect your monitor(s) to the HDMI, DisplayPort, or Type-C video outputs.
- USB Devices: Plug your keyboard, mouse, and other USB devices into the available USB 2.0 or USB 3.0 ports.
- Network: For a wired connection, connect an Ethernet cable to one of the 2.5G RJ45 ports.
- Audio: Connect speakers or headphones to the 2-in-1 Audio&Mic Jack if needed.
3.4 Powering On
Connect the power adapter to the DC-in port on the Mini PC, then plug the adapter into a power outlet. Press the power button on the front of the device to turn it on.
4. Operating System Installation
Since the Mini PC is shipped without an operating system, you will need to install one. The AOOSTAR R7 5825U supports various operating systems, including Windows 10/11, Ubuntu, OpenWrt, and other Linux distributions.
- Prepare Installation Media: Create a bootable USB drive with your preferred operating system's installation image.
- Boot from USB: With the installation media connected, power on the Mini PC. You may need to press a specific key (e.g., Del, F2, F10, F12) during startup to enter the BIOS/UEFI settings or a boot menu to select your USB drive as the boot device.
- Follow OS Installation Prompts: Proceed with the on-screen instructions to install the operating system onto your M.2 NVMe SSD or SATA drive.
- Install Drivers: After the OS installation, install any necessary drivers for optimal performance. These can usually be found on the AOOSTAR support website or the AMD website for the Ryzen 7 5825U processor.
5. Basic Operation
5.1 Display Configuration
The Mini PC supports up to three 4K@60Hz displays simultaneously. Connect your monitors to the HDMI, DisplayPort, and Type-C ports. You can configure display settings within your operating system to extend or duplicate your desktop.

Figure 5.1: Example setup of the AOOSTAR R7 5825U Mini PC connected to multiple displays, demonstrating its triple screen output capability.
5.2 Network Connectivity
Utilize the dual 2.5G RJ45 Ethernet ports for high-speed wired network connections or connect to Wi-Fi 6.0 for wireless access. Bluetooth 5.2 is available for connecting wireless peripherals.

Figure 5.2: Close-up of the AOOSTAR R7 5825U Mini PC's dual 2.5 Gigabit LAN ports, indicating high-speed network capabilities.
6. Maintenance
6.1 Cleaning
To maintain optimal performance and prevent overheating, regularly clean the Mini PC:
- Exterior: Use a soft, dry cloth to wipe down the exterior. Avoid liquid cleaners.
- Ventilation: Use compressed air to clear dust from the ventilation grilles and fan openings. Perform this periodically, especially in dusty environments.
6.2 Storage Expansion
The Mini PC supports additional 2.5-inch or 3.5-inch SATA drives for expanded storage. Refer to Section 3.2 for installation guidance. Ensure the Mini PC is powered off and unplugged before performing any internal modifications.

Figure 6.1: Diagram illustrating the dual fan cooling system of the AOOSTAR R7 5825U Mini PC, designed for efficient heat dissipation and stable operation.
7. Troubleshooting
This section addresses common issues you might encounter.
- No Power:
- Ensure the power adapter is securely connected to both the Mini PC and a working power outlet.
- Verify the power outlet is functional by testing with another device.
- No Display Output:
- Check that the monitor is powered on and the correct input source is selected.
- Ensure the video cable (HDMI, DP, Type-C) is securely connected to both the Mini PC and the monitor.
- Try a different video cable or monitor if available.
- Operating System Not Booting:
- Verify that RAM and SSD are correctly installed (refer to Section 3.2).
- Check BIOS/UEFI settings to ensure the correct boot device is selected.
- If recently installed, ensure the OS installation was completed successfully.
- Network Connectivity Issues:
- For wired connections, check the Ethernet cable and router/modem status.
- For Wi-Fi, ensure Wi-Fi is enabled in the operating system and you are connected to the correct network with the correct password.
- Update network drivers if necessary.
8. Specifications
Detailed technical specifications for the AOOSTAR R7 5825U Mini PC.
| Feature | Specification |
|---|---|
| Processor | AMD Ryzen 7 5825U (8 Cores, 16 Threads, up to 4.5 GHz) |
| RAM Type | DDR4 SODIMM (Dual Channel) |
| Max RAM Capacity | Up to 64GB DDR4 3200MHz |
| Storage (Internal) | 2x M.2 2280 NVMe SSD (PCIe 3.0, up to 2x 4TB) 2x 2.5"/3.5" SATA HDD/SSD (up to 44TB total) |
| Graphics | Integrated AMD Radeon Graphics |
| Video Outputs | 1x HDMI, 1x DisplayPort, 1x Full-featured Type-C (4K@60Hz Triple Display Support) |
| Ethernet | 2x 2.5G RJ45 Ethernet Ports |
| USB Ports | 2x USB 3.0, 2x USB 2.0, 1x Type-C |
| Audio | 1x 2-in-1 Audio&Mic Jack |
| Card Reader | 1x TF Card Reader |
| Wireless Connectivity | Wi-Fi 6.0, Bluetooth 5.2 |
| Operating System | None (Supports Windows 10/11, Linux, etc.) |
| Power Adapter | 90-100W |
| Dimensions | Approximately 12.83 x 8.82 x 7.76 inches (Package Dimensions) |
| Weight | Approximately 4.51 pounds (Item Weight) |
9. Warranty and Support
AOOSTAR provides a standard warranty for its products. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official AOOSTAR website. If you encounter any issues or require technical assistance, please contact AOOSTAR customer support through their official channels. Ensure you have your product model (R7 5825U) and purchase details available when seeking support.





